shadowedge.java

来自「java 3d game jme 工程开发源代码」· Java 代码 · 共 84 行

/*
 * Copyright (c) 2003-2009 jMonkeyEngine
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *
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 *   notice, this list of conditions and the following disclaimer.
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 *   may be used to endorse or promote products derived from this software 
 *   without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package com.jme.scene.shadow;

import java.io.IOException;

import com.jme.util.export.JMEExporter;
import com.jme.util.export.JMEImporter;
import com.jme.util.export.Savable;

/**
 * <code>ShadowEdge</code>
 * Holds the indices of two points that form an edge in a ShadowTriangle
 * 
 * @author Mike Talbot (some code from a shadow implementation written Jan 2005)
 * @author Joshua Slack
 * @version $Id: ShadowEdge.java,v 1.4 2006/06/01 15:05:44 nca Exp $
 */
public class ShadowEdge implements Savable {
    /**
     * <code>triangle</code> (int) the triangle number (in an occluder) to
     * which the edge is connected or INVALID_TRIANGLE if not connected.
     */
    public int triangle = ShadowTriangle.INVALID_TRIANGLE;
    
    /** The indices of the two points comprising this edge. */
    public int p0, p1;

    /**
     * @param p0 the first point
     * @param p1 the second point
     */
    public ShadowEdge(int p0, int p1) {
        this.p0 = p0;
        this.p1 = p1;
    }

	public void write(JMEExporter e) throws IOException {
		e.getCapsule(this).write(p0, "p0", 0);
		e.getCapsule(this).write(p1, "p1", 0);
		e.getCapsule(this).write(triangle, "triangle", ShadowTriangle.INVALID_TRIANGLE);
	}

	public void read(JMEImporter e) throws IOException {
		p0 = e.getCapsule(this).readInt("p0", 0);
		p1 = e.getCapsule(this).readInt("p1", 0);
		triangle = e.getCapsule(this).readInt("triangle", ShadowTriangle.INVALID_TRIANGLE);
	}
    
    public Class getClassTag() {
        return this.getClass();
    }
}